Origin and development of residual stresses induced by laser surface-hardening treatments
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In this paper, the variations of residual stresses and microstructures obtained by surface hardening with a 15kw, continuous-wave CO2 laser on samples of AISI 1045 (C43) and 40CD4 (40CD4) have been studied.Abstract:
The variations of residual stresses and microstructures obtained by surface hardening with a 15-kw, continuous-wave CO2 laser on samples of AISI 1045 (C43) and AISI 4140 (40CD4) have been studied.read more
Citations
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Journal ArticleDOI
Laser Transformation Hardening
TL;DR: In the early 1970s, surface hardening by inducing phase transformations through the heating effect of a laser beam was one of the first laser-based fabrication methods to be commercialised as discussed by the authors.
Journal ArticleDOI
Laser transformation hardening of tempered 4340 steel
R. K. Shiue,Chung-Hsuan Chen +1 more
TL;DR: In this article, a CO2 laser with a fixed laser power of 1.8 KW was employed to harden the surface of some AISI 4340 steel specimens, with a scan rate from 5 to 10 mm/s.
Journal ArticleDOI
Effect of laser hardening on the fatigue strength and fracture of a B–Mn steel
TL;DR: In this article, the influence of laser hardening on plane bending fatigue behavior (R=−1) of a B-Mn SS2131 (∼AISI 15B21H) steel has been studied.
Journal ArticleDOI
Microstructure, hardness and stress in melted zone of 42CrMo steel by wide-band laser surface melting
Chaowen Li,Yong Wang,Bin Han +2 more
TL;DR: In this article, a 3D finite element model has been developed to simulate the wide-band LSM process and predict the thermal and mechanical properties in the melted zone, and the accuracy of the developed finite element simulation strategy is validated for phase proportion and hardness distributions through the wideband laser surface melting on roller steel with proper instrumentation for data measurement.
Journal ArticleDOI
Residual stresses in two laser surface melted stainless steels
TL;DR: In this article, the residual stresses in two laser surface melted stainless steels were measured by X-ray diffractometry over a range of depths, processing conditions, and stress relieving heat treatments.
References
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Journal ArticleDOI
A Mechanical Determination of Biaxial Residual Stress in Sheet Materials
R. G. Treuting,W. T. Read +1 more
TL;DR: In this article, a method for determining the residual stress in a sheet material by removing successive uniform layers of material from the surface of a test specimen and measuring the resulting curvature is given.
Journal ArticleDOI
The role of residual stresses in the mechanical performance of case carburized steels
TL;DR: The residual stresses in case of carburized steels stem from two major sources, both of which are associated with the rapid cooling of the steels from elevated temperatures as discussed by the authors.
Journal ArticleDOI
The effect of quench rate on the properties and morphology of ferrous martensite
S. J. Donachie,G. S. Ansell +1 more
TL;DR: In this article, the effect of high quench rate on theMs temperature, percent transformed, martensite morphology and austenite hardness has been studied for several Fe-Ni-C steels.
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Apparatus for the continuous analysis of residual stresses in proximity to metallic surfaces
TL;DR: In this article, a new apparatus for the continuous measurement of residual stresses (both at the surface and in the underlying strata) in variously treated metal disks (carburizing, shot peening, nitriding, surface hardening, ion implantation, etc.).
Journal ArticleDOI
Device for the determination of biaxial‐symmetrical residual stresses in metallic, disk‐shaped specimens
V. Bulckaen,N. Gucci +1 more
TL;DR: In this paper, the residual stresses in metallic disks up to 3 mm thickness due to axi-symmetric surface treatments on both faces were determined by measuring normal stresses at any point on planes orthogonal to the disk in the cases of compressive internal stresses on carburized, nitrided, chromed, peened, etc., surfaces.